THE INFLUENCE OF SELF-EXPANDING METAL TINI STENT IN THE BODY OF ANIMALS IN THE EXPERIMENT

The article the results of experimental studies of the production and impact of stents on the rectum in rabbits. Presents the results of morphological studies of the rectum and colon in rabbits when self-expanding metal TiNi stent. Nickelide titanium (TiNi) has special physical characteristics: biocompatibility, resistance to corrosion, shape memory effect and sverkhelastichnostjyu. TiNi stent is a metallic elastic design, in the form of a cylindrical frame, which is placed in the lumen of hollow organs and enhances the plot, narrowed pathological process. The latter ensures patency of physiological fluids, expanding the lumen of a hollow organ, in this case the bowel. In the original martesana state, the stent is flexible and can change shape at a temperature of 0 to +25 0C, which makes it filling in the delivery system. After removal of the delivery system stent, inside the rectum of the rabbit and heated to a temperature of 33 0C, gradually begins to expand, taking the specified form. While in the modified section of the rectum stent is stretched radially, extending the area of stenosis and restoring unimpeded passage. The data postmortem studies of the intestinal wall of rabbits when interacting with selfexpanding metal TiNi stent.